1. POWER
Doing work in time

2. • A force applied to an object that results in
movement in the same direction that the
force is applied.
Definition of work

3. • Determine that the 2 conditions are met:
• Application of force
• Movement in the direction of the applied force
Calculating work

4. • Power is the measurement of work that is
done in an amount of time.
• “how much work can you do per second,
hour, etc.”
Definition of Power

5. • Power’s symbol: P
P=W
t
Formula to calculate

6. • Follow the units to get the units of power:
• Work=F*d
SI or Metric (N*m or Joules)
English (lb*ft)
• Power=W/t
SI or Metric (Nm/s or J/s)
English (lbft/s)
1 Joule/sec is called a Watt (What?)
Units!!!

7. • 550 ftlb/s = 746Watts = 1hp
Conversions